US5797426A - Check valve and trap assembly - Google Patents
Check valve and trap assembly Download PDFInfo
- Publication number
- US5797426A US5797426A US08/838,729 US83872997A US5797426A US 5797426 A US5797426 A US 5797426A US 83872997 A US83872997 A US 83872997A US 5797426 A US5797426 A US 5797426A
- Authority
- US
- United States
- Prior art keywords
- float
- outflow
- inflow
- conduit
- fluid trap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000012530 fluid Substances 0.000 claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000007788 liquid Substances 0.000 description 3
- 239000000356 contaminant Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 229920005570 flexible polymer Polymers 0.000 description 1
- 239000003562 lightweight material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/14—Collecting or removing condensed and defrost water; Drip trays
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/04—Check valves with guided rigid valve members shaped as balls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2321/00—Details or arrangements for defrosting; Preventing frosting; Removing condensed or defrost water, not provided for in other groups of this subclass
- F25D2321/14—Collecting condense or defrost water; Removing condense or defrost water
- F25D2321/146—Collecting condense or defrost water; Removing condense or defrost water characterised by the pipes or pipe connections
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7287—Liquid level responsive or maintaining systems
- Y10T137/7358—By float controlled valve
- Y10T137/7423—Rectilinearly traveling float
- Y10T137/7426—Float co-axial with valve or port
- Y10T137/7436—Float rigid with valve
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7287—Liquid level responsive or maintaining systems
- Y10T137/7358—By float controlled valve
- Y10T137/7439—Float arm operated valve
- Y10T137/7488—Ball valves
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7837—Direct response valves [i.e., check valve type]
- Y10T137/7904—Reciprocating valves
- Y10T137/7908—Weight biased
- Y10T137/7909—Valve body is the weight
- Y10T137/791—Ball valves
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7837—Direct response valves [i.e., check valve type]
- Y10T137/7904—Reciprocating valves
- Y10T137/7908—Weight biased
- Y10T137/7909—Valve body is the weight
- Y10T137/791—Ball valves
- Y10T137/7912—Separable seat
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/794—With means for separating solid material from the fluid
- Y10T137/8085—Hollow strainer, fluid inlet and outlet perpendicular to each other
Definitions
- This invention relates generally to devices to prevent liquid back flow and contaminate blockage within condensate moisture drains of apparati which produce condensate moisture, such as air conditioner or air handler units, ice makers, coolers, or the like, and especially for such apparati which produce negative pressure at the source of the condensate drains systems and which are located internally in buildings or houses, or mounted externally on roofs, and which must be provided with a moisture drain conduit system to remove condensate water from the unit for discharge external to the building or roof.
- apparati which produce condensate moisture, such as air conditioner or air handler units, ice makers, coolers, or the like, and especially for such apparati which produce negative pressure at the source of the condensate drains systems and which are located internally in buildings or houses, or mounted externally on roofs, and which must be provided with a moisture drain conduit system to remove condensate water from the unit for discharge external to the building or roof.
- the invention relates to such devices which incorporate one-way check valves allowing passage of water in the outflow direction but which prevent passage of air, liquid or other matter in the inflow direction, which utilize fluid traps to allow for outflow even when the units are operating, and which are mounted at the terminus of the moisture drain conduit system.
- a condensate moisture drain conduit system which consists of a length of conduit pipes sufficient in size and length to direct the water to an externally mounted outlet opening, where the condensate water is allowed to pass to the ground.
- the air conditioner units have fans which draw air through the evaporator coils and because fans are often operated continuously to keep air circulating within a building, there is a constant negative pressure in the condensate drain pan area, typically in the range of 1" H 2 O during operation but as much as 2"H 2 O or more at fan start-up, depending on the size of the return air duct and grilles.
- the invention is a combination one way check valve and fluid trap for condensate moisture drain systems of the type utilized with air conditioners or air handler units, coolers, ice makers or the like, and especially for use with such apparati which have fans creating negative pressure in the area of the inflow opening for the moisture drain system.
- the invention comprises in general a fluid trap assembly having a generally vertical inflow conduit member, a bottom conduit member or segment, and a generally vertical outflow conduit member, the outflow conduit member being directly connected to a one way check valve having a float member seated within a float seat, the float member able to be raised from the float seat by water flow through the outflow conduit member.
- the float member is retained within a housing having primary drain apertures on the bottom of the housing and, preferably, secondary drain apertures on the side of the housing.
- An O-ring seal composed of an elastomeric material is positioned within the float seat.
- the fluid trap preferably comprises rotation means which allows the inflow conduit member of the trap to be positioned at angles out of true vertical while maintaining the outflow conduit member and float housing in true vertical.
- FIG. 1 is a side view of the invention.
- FIG. 2 is a cross-sectional view of the invention.
- FIG. 3 is a top view of the housing base member, float seat and float seal.
- FIG. 4 is an end view showing the fluid tank positioned out of true vertical.
- the invention is a combination fluid trap and check valve device for use with liquid drainage systems, and in particular for use with condensate moisture drainage systems used with air conditioner or air handler units, coolers, ice makers or like apparati, where it is desirable or necessary to drain fluid from the unit while preventing backflow of fluid and contaminants into the drain system.
- the invention is seen to comprise in general a check valve assembly 10 and a fluid trap assembly 30, the fluid trap assembly 30 comprising a generally vertically oriented inflow conduit segment 31, a generally horizontally oriented bottom conduit segment 32 and a generally vertically oriented outflow conduit segment 33, where the check valve assembly 10 is directly connected to the outflow conduit segment 33 and the inflow conduit segment 31 is connected to the outflow opening of a drain system.
- the fluid trap 30 may be comprised of any suitable material, but is preferably composed of segments of PVC tubing joined in the usual manner to form the generally U-shaped fluid trap 30.
- the fluid trap 30 may be formed by joining two 90 degree elbow connectors having male/female connector fittings such that the junction in the bottom conduit segment forms a rotation means 36 when not fixed by adhesive. As will be explained in detail later, it is preferred that the two elbow connectors be free to rotate, such that the axis of inflow conduit segment 31 and the axis of outflow conduit segment 33 can be adjusted so as to be not parallel.
- the check valve assembly 10 may be permanently affixed to the outflow conduit segment 33 or removably mounted thereon.
- the internal diameter of the fluid trap assembly 30 is the same as the internal diameter of the condensate drain system such that water flow through the fluid trap assembly 30 is not restricted.
- the check valve assembly 10 comprises in general a housing 11 mounted directly onto the outflow conduit segment 33 of the fluid trap 30, the housing 11 acting to retain a ball float 1.
- the float housing 11 comprises a cap member 12 and base member 14 connected by a sleeve member 13.
- Base member 14 contains primary drain apertures 15 which allow any fluid coming through outflow opening 35 of outflow conduit segment 33 to drain from the housing 11.
- sleeve member 13 contains secondary drain apertures 16 which allow fluid drainage should the primary drain apertures 15 become clogged or blocked.
- Sleeve member 13 may be composed of PVC, as may base member 14 and cap member 12, or of metal, wire screen or any other suitable material.
- cap member 12, sleeve member 13 and base member 14 defines housing 11, which retains ball float 1 therein--the housing 11 allowing vertical movement of the float 1 but little or no lateral movement.
- the housing 11 may be permanently joined or non-permanently joined to allow the housing 11 to be removed form the fluid trap 30 to enable the trap 30 to be cleaned if necessary.
- the base member 14 of housing 11 contains a horizontally disposed annular float seat 21 to receive the round ball float 1, as seen in FIG. 3.
- Ball float 1 is made of any suitable lightweight material which floats on water, such as plastic.
- float seat 21 contains an annular O-ring seal 22 composed of a generally flexible polymer of elastomer to provide a better seal against ball float 1.
- Float seal 22 may be coated with a silicon composition or the like to prolong the use life of the O-ring.
- ball float 1, float seal 21 and housing 11 act as a one way check valve which allows water to flow from the outflow opening 35 of outflow conduit segment 33 when there is sufficient water within fluid trap 30 to raise the float ball 1.
- the ball float 1 When the excess water has been released, the ball float 1 will seat against float seal 22, thereby preventing water or air from entering the trap 30 and the drain system.
- the air conditioner unit or like apparatus When the air conditioner unit or like apparatus is creating negative pressure at the drain system inflow area, the combination of the water within the fluid trap 30 and the tight seal between the float 1 and the float seal 22 prevents any water from being drawn back through the drain system. Even without the negative pressure, the combination of check valve 10 and fluid trap 30 insure that no contaminants will enter the drain system. Should the water in fluid trap 30 evaporate completely, the check valve assembly 10 prevents air from being drawn through fluid trap 30 into the drain system, allowing condensate moisture to flow into the fluid trap 30 to refill it and create the additional backflow sealing means.
- the orientation of a portion of the fluid trap 30 is adjustable relative to the orientation of the float housing 11, such that the longitudinal axis of the inflow conduit segment 31 and the longitudinal axis of the outflow conduit segment 33 and float seat 21 are not in parallel alignment.
- the axis of the outflow conduit segment 33 should be maintained in the true vertical orientation so that the float seat 21 remains horizontally disposed to receive the ball float 1, but in many circumstances it is desirable that the axis of the inflow conduit segment 31 be other than vertical, such as where the amount of ground clearance beneath bottom segment 32 is limited or the outflow opening of the drain system is not vertically oriented.
- the inflow opening 34 must be higher than the outflow opening 35.
- the two axes may be non-aligned.
- the fluid trap 30 is provided with rotation means 36, shown in FIG. 1 as the non-glued combination of the male/female connectors between the two elbow components, but the rotation could also comprise an internally mounted sleeve at the juncture in the bottom segment 32 or other suitable means.
- the rotation means 36 allows the fluid trap 30 to be configured as shown in FIG. 4 with the inflow conduit member 31 shown at approximately 45 degrees, thereby shortening the overall height of the device.
Abstract
Description
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/838,729 US5797426A (en) | 1997-04-10 | 1997-04-10 | Check valve and trap assembly |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/838,729 US5797426A (en) | 1997-04-10 | 1997-04-10 | Check valve and trap assembly |
Publications (1)
Publication Number | Publication Date |
---|---|
US5797426A true US5797426A (en) | 1998-08-25 |
Family
ID=25277906
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/838,729 Expired - Lifetime US5797426A (en) | 1997-04-10 | 1997-04-10 | Check valve and trap assembly |
Country Status (1)
Country | Link |
---|---|
US (1) | US5797426A (en) |
Cited By (38)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6318397B1 (en) | 1999-08-04 | 2001-11-20 | Donald G. Huber | Side port floor drain |
GB2394539A (en) * | 2002-10-24 | 2004-04-28 | James Campbell | Condensate removal apparatus for air ventilation plant |
US6745580B1 (en) | 2002-03-12 | 2004-06-08 | David Brown | Combination P-trap, shutoff switch and cleanout fitting |
US20040163422A1 (en) * | 2002-11-28 | 2004-08-26 | Kim Jong Seok | Washing machine |
US20050092008A1 (en) * | 2003-10-29 | 2005-05-05 | Jamco Corporation | Air chiller unit |
US20050126638A1 (en) * | 2003-12-12 | 2005-06-16 | Halliburton Energy Services, Inc. | Check valve sealing arrangement |
US6983803B2 (en) | 2002-05-17 | 2006-01-10 | Halliburton Energy Services, Inc. | Equalizer valve and associated method for sealing a fluid flow |
US20060201557A1 (en) * | 2005-03-09 | 2006-09-14 | Globe Union Industrial Corp. | Ball check valve |
US20070034260A1 (en) * | 2001-06-11 | 2007-02-15 | C-Dax Systems Limited | Tanks |
US20080099083A1 (en) * | 2004-10-15 | 2008-05-01 | Shingo Nishimoto | Drain Trap |
ES2336530A1 (en) * | 2008-02-28 | 2010-04-13 | Bsh Electrodomesticos España, S.A. | Refrigeration apparatus (Machine-translation by Google Translate, not legally binding) |
US20100154437A1 (en) * | 2008-10-17 | 2010-06-24 | Nepsha William J | Thermoelectric Dehumidifier and Enclosure Vent Drain Assembly |
US20110181427A1 (en) * | 2010-01-28 | 2011-07-28 | Nihon Kohden Corporation | Gas analyzer |
GB2479772A (en) * | 2010-04-22 | 2011-10-26 | Robert Anderson | Float-controlled condensate siphon device of an air conditioner |
WO2012051252A1 (en) * | 2010-10-12 | 2012-04-19 | Parker-Hannifin Corporation | Fuel tank flammability-reducing gas distribution architecture |
JP2012247138A (en) * | 2011-05-27 | 2012-12-13 | Fukushima Industries Corp | Refrigerator |
JP2012247139A (en) * | 2011-05-27 | 2012-12-13 | Fukushima Industries Corp | Refrigerator |
CN103787452A (en) * | 2014-02-28 | 2014-05-14 | 张晓荣 | Guide device |
GB2508424A (en) * | 2012-11-30 | 2014-06-04 | Greenwood Air Man Ltd | Drain arrangement for gas heat recovery unit |
JP2014105503A (en) * | 2012-11-28 | 2014-06-09 | Unix Co Ltd | Underfloor flooding prevention device |
US9010363B2 (en) | 2013-06-24 | 2015-04-21 | The Rectorseal Corporation | Drain valve |
US9139991B2 (en) | 2011-01-31 | 2015-09-22 | The Rectorseal Corporation | Floor drain valve with resiliently mounted rigid flappers |
US20160146502A1 (en) * | 2014-11-26 | 2016-05-26 | Samsung Electronics Co., Ltd. | Air conditioning equipment |
US9416986B2 (en) | 2013-06-24 | 2016-08-16 | The Rectorseal Corporation | Valve for roof vent |
US9777957B1 (en) | 2014-11-28 | 2017-10-03 | Nicholas H. Des Champs | Systems, devices, and/or methods for managing condensate and/or water |
CN109405255A (en) * | 2018-09-06 | 2019-03-01 | 珠海格力电器股份有限公司 | A kind of drainage arrangement of air-conditioning internal machine and air-conditioning including the drainage arrangement |
US10451307B2 (en) | 2016-04-15 | 2019-10-22 | Hoffman Enclosures, Inc. | Float drain |
WO2020142619A1 (en) * | 2019-01-03 | 2020-07-09 | Ecoshore Int'l, Inc. | Systems and methods for coastal drainage control |
US10775073B2 (en) * | 2016-08-14 | 2020-09-15 | Nicholas Howard Des Champs | Systems, devices, and/or methods for managing condensate |
CN111750165A (en) * | 2020-06-19 | 2020-10-09 | 上海融德亦村机电有限公司 | Water drainage choke valve |
US11060786B1 (en) | 2019-10-14 | 2021-07-13 | Nicholas Howard Des Champs | Systems, devices, and/or methods for managing condensate |
US11162598B2 (en) * | 2017-07-06 | 2021-11-02 | Orlas Technologies Limited Liability Company | Check valve |
US11231203B1 (en) | 2021-02-23 | 2022-01-25 | Nicholas H. Des Champs | Systems, devices, and/or methods for managing condensate |
US11299873B1 (en) * | 2019-11-22 | 2022-04-12 | Benjamin Dillingham | Sewage backflow preventing valve |
DE102021105512A1 (en) | 2020-12-07 | 2022-06-09 | Liebherr-Hausgeräte Ochsenhausen GmbH | Defrost water drain for a refrigerator and / or freezer |
US20230151899A1 (en) * | 2020-04-02 | 2023-05-18 | Equilibar, Llc | Mechanical valve for pressure control |
US11808482B1 (en) | 2023-06-30 | 2023-11-07 | Des Champs Technologies Llc | Systems, devices, and/or methods for managing condensate |
WO2024012938A1 (en) * | 2022-07-15 | 2024-01-18 | Zehnder Group International Ag | Heat recovery ventilation unit with drainage |
Citations (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1263480A (en) * | 1915-10-15 | 1918-04-23 | George C Brett | Steam-trap. |
US1380415A (en) * | 1919-04-10 | 1921-06-07 | James K Putnam | Check-valve |
US1779322A (en) * | 1928-12-17 | 1930-10-21 | Frank W Leidecker | Check valve |
US1906277A (en) * | 1929-08-06 | 1933-05-02 | Alex J Johnston | Valve |
US1927582A (en) * | 1931-01-21 | 1933-09-19 | Ralph G Denk | Combined filter and check valve |
US2278715A (en) * | 1940-10-10 | 1942-04-07 | Crane Co | Valve |
US2767732A (en) * | 1955-02-03 | 1956-10-23 | Infilco Inc | Float control device |
US2813538A (en) * | 1955-02-25 | 1957-11-19 | Miehle Goss Dexter Inc | Ink level control mechanism |
US2906285A (en) * | 1957-10-07 | 1959-09-29 | Capital Plating & Machine Co | Submerged valve mechanism, more particularly for water softener brine tank |
US2920644A (en) * | 1957-03-25 | 1960-01-12 | Culligan Inc | Liquid level valve assembly |
US2972412A (en) * | 1955-03-25 | 1961-02-21 | Stanley A Lundeen | Float valve and strainer |
US3489164A (en) * | 1966-11-29 | 1970-01-13 | Katsuji Fujiwara | Free float type steam trap |
GB2000274A (en) * | 1977-06-20 | 1979-01-04 | Tlv Co Ltd | Float type steam trap |
US4258742A (en) * | 1979-04-03 | 1981-03-31 | Phillips Petroleum Company | Tapping apparatus |
US4327764A (en) * | 1980-05-21 | 1982-05-04 | Superpressure, Inc. | Float valve assembly for a liquid drain trap |
US4606365A (en) * | 1985-07-02 | 1986-08-19 | Siposs George G | Buoyant blood stop valve |
US4742842A (en) * | 1986-02-03 | 1988-05-10 | Hamlet & Garneau Inc. | Hydro-pneumatic pressure vessels |
US5137044A (en) * | 1990-10-12 | 1992-08-11 | Brady David S | Collapsible tent structure |
US5146947A (en) * | 1990-07-30 | 1992-09-15 | Afa-Tec S.R.L. | Condensate drainage for gaseous fuel fired condensation boilers |
US5186203A (en) * | 1990-10-15 | 1993-02-16 | Tlv Co., Ltd. | Free float steam trap |
US5421360A (en) * | 1993-05-07 | 1995-06-06 | Groth Corporation | Float assisted automatic driptrap |
-
1997
- 1997-04-10 US US08/838,729 patent/US5797426A/en not_active Expired - Lifetime
Patent Citations (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1263480A (en) * | 1915-10-15 | 1918-04-23 | George C Brett | Steam-trap. |
US1380415A (en) * | 1919-04-10 | 1921-06-07 | James K Putnam | Check-valve |
US1779322A (en) * | 1928-12-17 | 1930-10-21 | Frank W Leidecker | Check valve |
US1906277A (en) * | 1929-08-06 | 1933-05-02 | Alex J Johnston | Valve |
US1927582A (en) * | 1931-01-21 | 1933-09-19 | Ralph G Denk | Combined filter and check valve |
US2278715A (en) * | 1940-10-10 | 1942-04-07 | Crane Co | Valve |
US2767732A (en) * | 1955-02-03 | 1956-10-23 | Infilco Inc | Float control device |
US2813538A (en) * | 1955-02-25 | 1957-11-19 | Miehle Goss Dexter Inc | Ink level control mechanism |
US2972412A (en) * | 1955-03-25 | 1961-02-21 | Stanley A Lundeen | Float valve and strainer |
US2920644A (en) * | 1957-03-25 | 1960-01-12 | Culligan Inc | Liquid level valve assembly |
US2906285A (en) * | 1957-10-07 | 1959-09-29 | Capital Plating & Machine Co | Submerged valve mechanism, more particularly for water softener brine tank |
US3489164A (en) * | 1966-11-29 | 1970-01-13 | Katsuji Fujiwara | Free float type steam trap |
GB2000274A (en) * | 1977-06-20 | 1979-01-04 | Tlv Co Ltd | Float type steam trap |
US4258742A (en) * | 1979-04-03 | 1981-03-31 | Phillips Petroleum Company | Tapping apparatus |
US4327764A (en) * | 1980-05-21 | 1982-05-04 | Superpressure, Inc. | Float valve assembly for a liquid drain trap |
US4606365A (en) * | 1985-07-02 | 1986-08-19 | Siposs George G | Buoyant blood stop valve |
US4742842A (en) * | 1986-02-03 | 1988-05-10 | Hamlet & Garneau Inc. | Hydro-pneumatic pressure vessels |
US5146947A (en) * | 1990-07-30 | 1992-09-15 | Afa-Tec S.R.L. | Condensate drainage for gaseous fuel fired condensation boilers |
US5137044A (en) * | 1990-10-12 | 1992-08-11 | Brady David S | Collapsible tent structure |
US5186203A (en) * | 1990-10-15 | 1993-02-16 | Tlv Co., Ltd. | Free float steam trap |
US5421360A (en) * | 1993-05-07 | 1995-06-06 | Groth Corporation | Float assisted automatic driptrap |
Cited By (53)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6318397B1 (en) | 1999-08-04 | 2001-11-20 | Donald G. Huber | Side port floor drain |
US20070034260A1 (en) * | 2001-06-11 | 2007-02-15 | C-Dax Systems Limited | Tanks |
US7370665B2 (en) * | 2001-06-11 | 2008-05-13 | C-Dax Systems Limited | Tanks |
US6745580B1 (en) | 2002-03-12 | 2004-06-08 | David Brown | Combination P-trap, shutoff switch and cleanout fitting |
US6983803B2 (en) | 2002-05-17 | 2006-01-10 | Halliburton Energy Services, Inc. | Equalizer valve and associated method for sealing a fluid flow |
GB2394539A (en) * | 2002-10-24 | 2004-04-28 | James Campbell | Condensate removal apparatus for air ventilation plant |
US7350380B2 (en) * | 2002-11-28 | 2008-04-01 | Lg Electronics Inc. | Washing machine |
US20040163422A1 (en) * | 2002-11-28 | 2004-08-26 | Kim Jong Seok | Washing machine |
US7174739B2 (en) * | 2003-10-29 | 2007-02-13 | Jamco Corporation | Air chiller unit |
US20050092008A1 (en) * | 2003-10-29 | 2005-05-05 | Jamco Corporation | Air chiller unit |
US20050126638A1 (en) * | 2003-12-12 | 2005-06-16 | Halliburton Energy Services, Inc. | Check valve sealing arrangement |
US7823601B2 (en) * | 2004-10-15 | 2010-11-02 | Kondoh-Frp Co., Ltd. | Drain trap |
US20080099083A1 (en) * | 2004-10-15 | 2008-05-01 | Shingo Nishimoto | Drain Trap |
US20060201557A1 (en) * | 2005-03-09 | 2006-09-14 | Globe Union Industrial Corp. | Ball check valve |
US7237569B2 (en) * | 2005-03-09 | 2007-07-03 | Globe Union Industrial Corp. | Ball check valve |
ES2336530A1 (en) * | 2008-02-28 | 2010-04-13 | Bsh Electrodomesticos España, S.A. | Refrigeration apparatus (Machine-translation by Google Translate, not legally binding) |
US20100154437A1 (en) * | 2008-10-17 | 2010-06-24 | Nepsha William J | Thermoelectric Dehumidifier and Enclosure Vent Drain Assembly |
US8839630B2 (en) | 2008-10-17 | 2014-09-23 | Hoffman Enclosures, Inc. | Thermoelectric dehumidifier and enclosure vent drain assembly |
US20110181427A1 (en) * | 2010-01-28 | 2011-07-28 | Nihon Kohden Corporation | Gas analyzer |
EP2363065A1 (en) * | 2010-01-28 | 2011-09-07 | Nihon Kohden Corporation | Gas analyzer |
US9417222B2 (en) | 2010-01-28 | 2016-08-16 | Nihon Kohden Corporation | Gas analyzer |
US8823533B2 (en) | 2010-01-28 | 2014-09-02 | Nihon Kohden Corporation | Gas analyzer |
GB2479772A (en) * | 2010-04-22 | 2011-10-26 | Robert Anderson | Float-controlled condensate siphon device of an air conditioner |
WO2012051252A1 (en) * | 2010-10-12 | 2012-04-19 | Parker-Hannifin Corporation | Fuel tank flammability-reducing gas distribution architecture |
CN103328050A (en) * | 2010-10-12 | 2013-09-25 | 派克汉尼芬公司 | Fuel tank flammability-reducing gas distribution architecture |
US9139991B2 (en) | 2011-01-31 | 2015-09-22 | The Rectorseal Corporation | Floor drain valve with resiliently mounted rigid flappers |
JP2012247138A (en) * | 2011-05-27 | 2012-12-13 | Fukushima Industries Corp | Refrigerator |
JP2012247139A (en) * | 2011-05-27 | 2012-12-13 | Fukushima Industries Corp | Refrigerator |
JP2014105503A (en) * | 2012-11-28 | 2014-06-09 | Unix Co Ltd | Underfloor flooding prevention device |
US20150308709A1 (en) * | 2012-11-30 | 2015-10-29 | Greenwood Air Management Limited | Drain arrangement for heat recovery unit |
GB2508424A (en) * | 2012-11-30 | 2014-06-04 | Greenwood Air Man Ltd | Drain arrangement for gas heat recovery unit |
US9010363B2 (en) | 2013-06-24 | 2015-04-21 | The Rectorseal Corporation | Drain valve |
US9416986B2 (en) | 2013-06-24 | 2016-08-16 | The Rectorseal Corporation | Valve for roof vent |
CN103787452A (en) * | 2014-02-28 | 2014-05-14 | 张晓荣 | Guide device |
US20160146502A1 (en) * | 2014-11-26 | 2016-05-26 | Samsung Electronics Co., Ltd. | Air conditioning equipment |
US10101058B2 (en) * | 2014-11-26 | 2018-10-16 | Samsung Electronics Co., Ltd. | Air conditioning equipment |
US9777957B1 (en) | 2014-11-28 | 2017-10-03 | Nicholas H. Des Champs | Systems, devices, and/or methods for managing condensate and/or water |
US10451307B2 (en) | 2016-04-15 | 2019-10-22 | Hoffman Enclosures, Inc. | Float drain |
US10775073B2 (en) * | 2016-08-14 | 2020-09-15 | Nicholas Howard Des Champs | Systems, devices, and/or methods for managing condensate |
US11162598B2 (en) * | 2017-07-06 | 2021-11-02 | Orlas Technologies Limited Liability Company | Check valve |
CN109405255A (en) * | 2018-09-06 | 2019-03-01 | 珠海格力电器股份有限公司 | A kind of drainage arrangement of air-conditioning internal machine and air-conditioning including the drainage arrangement |
WO2020142619A1 (en) * | 2019-01-03 | 2020-07-09 | Ecoshore Int'l, Inc. | Systems and methods for coastal drainage control |
US11591763B2 (en) | 2019-01-03 | 2023-02-28 | Ecoshore Int'l, Inc. | Systems and methods for coastal drainage control |
US11060786B1 (en) | 2019-10-14 | 2021-07-13 | Nicholas Howard Des Champs | Systems, devices, and/or methods for managing condensate |
US11299873B1 (en) * | 2019-11-22 | 2022-04-12 | Benjamin Dillingham | Sewage backflow preventing valve |
US20230151899A1 (en) * | 2020-04-02 | 2023-05-18 | Equilibar, Llc | Mechanical valve for pressure control |
CN111750165A (en) * | 2020-06-19 | 2020-10-09 | 上海融德亦村机电有限公司 | Water drainage choke valve |
DE102021105512A1 (en) | 2020-12-07 | 2022-06-09 | Liebherr-Hausgeräte Ochsenhausen GmbH | Defrost water drain for a refrigerator and / or freezer |
US20220268482A1 (en) * | 2021-02-23 | 2022-08-25 | Nicholas H. Des Champs | Systems, Devices, and/or Methods for Managing Condensate |
US11486603B2 (en) * | 2021-02-23 | 2022-11-01 | Nicholas H. Des Champs | Systems, devices, and/or methods for managing condensate |
US11231203B1 (en) | 2021-02-23 | 2022-01-25 | Nicholas H. Des Champs | Systems, devices, and/or methods for managing condensate |
WO2024012938A1 (en) * | 2022-07-15 | 2024-01-18 | Zehnder Group International Ag | Heat recovery ventilation unit with drainage |
US11808482B1 (en) | 2023-06-30 | 2023-11-07 | Des Champs Technologies Llc | Systems, devices, and/or methods for managing condensate |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5797426A (en) | Check valve and trap assembly | |
US7854238B2 (en) | Conduit trap and condensation recovery device | |
US4633673A (en) | Emergency shutoff for air conditioners | |
US6068023A (en) | Valve for clearing air conditioning drain lines | |
US5722458A (en) | Valve for clearing air conditioning drain lines | |
US6698225B2 (en) | Biased condensation trap | |
JP6826465B2 (en) | Pipe fittings, drainage structure and drainage pipe connection structure | |
US5644925A (en) | Air conditioning system condensing trap | |
US6584795B1 (en) | Condensate drain for an air conditioning system | |
US6000425A (en) | Automatic remote fluid level controller | |
US9182181B2 (en) | Condensate drain trap for an air conditioning system | |
US6209570B1 (en) | Automatic flush valve | |
ES2219757T3 (en) | SEWER OF SEWAGE SEWER. | |
KR100347979B1 (en) | The structure of drain for air-conditioner | |
US11662119B2 (en) | Packaged terminal air conditioner and wall sleeve therefor | |
US11788767B2 (en) | Bottom drain pan for packaged terminal air conditioner sleeve | |
JPH09280593A (en) | Drain apparatus | |
AU2019446571B2 (en) | Evaporative cooler operable in a range of mounting angles | |
CN213901444U (en) | Ventilating and water-stopping device of air conditioner condensate pipe | |
GB2459536A (en) | Valve with float | |
KR200397304Y1 (en) | An apparatus for preventing a condensate backward in the air conditioner | |
AU2013201703B2 (en) | An evaporative air conditioner | |
US20050127311A1 (en) | Fluid release system | |
TWM481374U (en) | Air blocking device for air conditioner drainage pipe | |
CN104930684A (en) | Miniature drainage device for air conditioner |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
FPAY | Fee payment |
Year of fee payment: 4 |
|
FPAY | Fee payment |
Year of fee payment: 8 |
|
REMI | Maintenance fee reminder mailed | ||
LAPS | Lapse for failure to pay maintenance fees | ||
REIN | Reinstatement after maintenance fee payment confirmed | ||
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 20100825 |
|
FEPP | Fee payment procedure |
Free format text: PETITION RELATED TO MAINTENANCE FEES GRANTED (ORIGINAL EVENT CODE: PMFG); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY Free format text: PETITION RELATED TO MAINTENANCE FEES FILED (ORIGINAL EVENT CODE: PMFP); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY |
|
PRDP | Patent reinstated due to the acceptance of a late maintenance fee |
Effective date: 20110812 |
|
FPAY | Fee payment |
Year of fee payment: 12 |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
SULP | Surcharge for late payment |